利用有限元法研究了连续铸挤工艺中液态金属 的动态凝固过程。 数值计算和实测结果表明， 摩擦热和变形热对铝材连续铸挤凝固区的温 度场有较大影响， 采用等价比热法处理凝固潜热问题是切实可行的。 通过速度场与温度场 的耦合计算， 得到了凝固区的 温度场分布情况。
The solidification process of liquid metal in t he CASTEX technique was studied by FEM(finite element method). The calculated an d experimental results show that friction heat and deformation heat have great influence on the distrib ution of temperature and it is feasible to handle the latent heat of solidification process by equivalent spe cific heat method. The distribution of the temperature field in solidificati on zone was gained by coupling calculating of velocity field and temperature fie ld.
参考文献
| [1] | 王祝堂.Conform挤压工艺及Castex铸挤工艺[J].轻合金加工技术,1986(04):29-33. |
| [2] | Green D .Filed Match[P].UK Patent 13708941971 |
| [3] | Rarade J A .Conform-The revolutionary process for continuous extru sion of aluminum tube from rod and scrap[J].Light Metal Age,1984,42(04):6. |
| [4] | 陆煜;程 林.传热原理与分析[M].北京:科学出版社,1997:6. |
| [5] | Incropera F P;Dewitt D P.Fundamentals of Heat Transfer[M].Canada:John Wiley & Sons Inc,1981:44-45. |
| [6] | CEBECI T;Bradshaw P.Physical and Computational Aspects o f Convective Heat Transfer[M].New York: Springer-Verlag New York Inc,1984 |
| [7] | 刘高琪.温度场的数值模拟[M].重庆:重庆大学出版社,1990 |
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